ColorConvert[expr, colspace] converts color specifications in expr to refer to the color space represented by colspace.
Dilation[image, ker] gives the morphological dilation of image with respect to the structuring element ker.Dilation[image, r] gives the dilation with respect to a range r ...
DirichletConvolve[f, g, n, m] gives the Dirichlet convolution of the expressions f and g.
DiscreteIndicator[x, x_1, {u_1, u_2, ...}] yields the discrete indicator function, equal to 1 if x = x_1 and 0 if x = u_i for any i.
EmitSound[snd] emits the sound snd when evaluated. EmitSound[{snd_1, snd_2, ...}] emits each of the sounds snd_i in sequence.
Entropy
(Built-in Mathematica Symbol) Entropy[list] gives the base E information entropy of the values in list.Entropy[k, list] gives the base k information entropy.
Erosion
(Built-in Mathematica Symbol) Erosion[image, ker] gives the morphological erosion of image with respect to the structuring element ker.Erosion[image, r] gives the erosion with respect to a range-r square.
FileBaseName["file"] gives the base name for a file without its extension.
FileNameSplit["filename"] splits a file name into a list of parts.
FontFamily is an option for Style and Cell that specifies the font family in which text should be rendered.